砍伐

In this paper, the biomasses of 4 types of shrublands,such as Myrsine africana,Loropetalum chinense,Vitex negundo and Cotinus coggygria,and their responses to cutting were investigated with harvest method and cutting experiment.

本文采用收获法和模拟砍伐实验研究了三峡地区铁仔灌丛、木灌丛、荆条灌丛和黄栌灌丛的生物量及黄栌灌丛、木灌丛地上部分砍伐后的再生能力。

I was upset by what I thought were excessive clear-cutting practices by some of our timber companies and appointed Steve Smith to head a task force to look into it.

我们州内的一些木材公司在砍伐树木时采取了完全砍伐光的过分做法，我对此感到不快，于是指派史蒂夫。

I intend that humans cease to deforest and reforest those regions that have been deforested.

我希望人类停止滥砍伐，并对那些已经过度砍伐的森林重新造林。

Impacts of selective logging on Nymphalid butterflies in primary forest and forest selectively logged 15 years previously in Sabah.

在此次研究中，我们在沙巴洲的原始森林和15前年被选择性砍伐过的森林中使用以水果为诱饵的装置来研究选择性砍伐对蛱蝶的影响，从而研究冠层取样的重要性。

According to the valuation of 1831, there were in Concord two thousand one hundred and eleven acres, or about one seventh of the whole territory in meadow; this standing next in the list after pasturage and unimproved lands, and, judging from the returns of previous years, the meadow is not reclaimed so fast as the woods are cleared.

根据1831的评估，康科德有两千一百一十一英亩的土地，整个区域大约有七分之一处于草甸中；这些未砍伐的区域位于牧场和未耕种土地之外的田垄里，并且以前一年的结果来看，树木一旦被砍伐掉，草甸就无法再生了。

The plan calls for an immediate three-year moratorium on logging on 29m hectares while conservation plans to protect woodland caribou are developed; the goal is eventually to distinguish those lands that can be logged using sustainable techniques and those that cannot be logged at all.

这项协议要求在2900万公顷的森林立即实施一项为期三年的暂停商业性林木砍伐计划，同时推出对林地驯鹿的各种保护措施，最终的目标是要划分出哪些林地可以利用不破坏生态平衡的技术进行砍伐，哪些林区完全不能进行商业性伐木作业。

Any of various bladed, hand-held implements used as a cutting tool or weapon.

砍伐工具任何一种有刀口的，可以手握的器具，用于砍伐的工具或武器

Sequoia and giant fir is of high quality wood, a very wide applicability, can be used as Zaofang Zi, furniture, rail fence Zhenmu and wood piles.

商业性的木材砍伐自淘金时代开始，红杉树仍在继续砍伐，在木材公司和环保主义者之间引起争议。

And a series of four-centered and three-centered transition states were obtained.

森林经营的历史性转变？？从砍伐天然林为主到砍伐人工林为主

In the sixteen hundreds Haiti's French colonizers cleared forests to plant sugar cane. In the nineteen fifties, forests were cut down for wood and other products.

16世纪，海地的法国殖民者砍伐了大片森林种植甘蔗。19世纪50年代，森林被砍伐用来生产木材和其他产品。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。